Hi there, are you still using SharpDevelop 3, and Alex 2 (http://alex.codeplex.com)?
Well, time for a change, as SharpDevelop 4 is nice, and we have Alex 3 for it now,
http://alex.codeplex.com/releases/view/57326
If you miss Ctrl+W for your C# files, it is time to grab a copy.